ICE Special Agent Exam Prep

Category - Mathematics - Medium

In a school fund-raiser, 10 students in class A sold an average (arithmetic mean) of 4 boxes of cookies. In class B, 15 students sold an average of 9 boxes. What was the average number of boxes of cookies sold by the 25 students?
  1. 13/25
  2. 1
  3. 6-1/2
  4. 7
  5. 13-6/13
Explanation
Answer: D - 7
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